/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
{
// your code goes here
IntStream chars = "bookkeep".chars();
System.
out.
println(chars.
count()); //chars.distinct().sorted().forEach(ch -> System.out.printf("%c ", ch));
}
}
LyogcGFja2FnZSB3aGF0ZXZlcjsgLy8gZG9uJ3QgcGxhY2UgcGFja2FnZSBuYW1lISAqLwoKaW1wb3J0IGphdmEudXRpbC4qOwppbXBvcnQgamF2YS5sYW5nLio7CmltcG9ydCBqYXZhLmlvLio7CgovKiBOYW1lIG9mIHRoZSBjbGFzcyBoYXMgdG8gYmUgIk1haW4iIG9ubHkgaWYgdGhlIGNsYXNzIGlzIHB1YmxpYy4gKi8KY2xhc3MgSWRlb25lCnsKCXB1YmxpYyBzdGF0aWMgdm9pZCBtYWluIChTdHJpbmdbXSBhcmdzKSB0aHJvd3MgamF2YS5sYW5nLkV4Y2VwdGlvbgoJewoJCS8vIHlvdXIgY29kZSBnb2VzIGhlcmUKCQlJbnRTdHJlYW0gY2hhcnMgPSAiYm9va2tlZXAiLmNoYXJzKCk7CgkJU3lzdGVtLm91dC5wcmludGxuKGNoYXJzLmNvdW50KCkpOwoJCS8vY2hhcnMuZGlzdGluY3QoKS5zb3J0ZWQoKS5mb3JFYWNoKGNoIC0+IFN5c3RlbS5vdXQucHJpbnRmKCIlYyAiLCBjaCkpOwoJfQp9